In one aspect, a wireless device receives a scheduling grant and a grant confirmation signal indicating that a network node has performed a CCA on a carrier and is releasing the carrier for the wireless device. An uplink message is transmitted on the carrier without performing a CCA on the carrier. In another aspect, a wireless device is connected to a first cell and a second cell configured on a carrier requiring an LBT protocol. The wireless device receives configuration messages indicating that downlink transmissions on the second cell are to be scheduled. This can mean self-scheduling for downlink on the second cell and cross-carrier scheduling for uplink on the first cell. The wireless device receives a scheduling grant in the first cell and performs a CCA in the second cell. The wireless device then transmits an uplink message responsive to success of the CCA.
Legal claims defining the scope of protection, as filed with the USPTO.
2. The method of claim 1, wherein the confirmation signal is received after the scheduling signal.
3. The method of claim 1, wherein the scheduling signal is a scheduling grant, and wherein the confirmation signal is a grant confirmation signal.
4. The method of claim 3, wherein the confirmation signal is received after the scheduling signal.
6. The method of claim 5, wherein the confirmation signal is transmitted after the scheduling signal.
7. The method of claim 5, wherein the scheduling signal is a scheduling grant, and wherein the confirmation signal is a grant confirmation signal.
8. The method of claim 7, wherein the confirmation signal is transmitted after the scheduling signal.
9. The method of claim 7, wherein transmitting the scheduling signal is preceded by performing a CCA.
10. The method of claim 5, wherein transmitting the scheduling signal is preceded by performing a CCA.
12. The wireless device of claim 11, wherein the circuitry is configured to cause the wireless device to receive the confirmation signal after the scheduling signal.
13. The wireless device of claim 11, wherein the scheduling signal is a scheduling grant, and wherein the confirmation signal is a grant confirmation signal.
14. The wireless device of claim 13, wherein the circuitry is configured to cause the wireless device to receive the confirmation signal after the scheduling signal.
16. The network node of claim 15, wherein the circuitry is configured to cause the network node to transmit the confirmation signal after the scheduling signal.
17. The network node of claim 15, wherein the scheduling signal is a scheduling grant, and wherein the confirmation signal is a grant confirmation signal.
18. The network node of claim 17, wherein the circuitry is configured to cause the network node to transmit the confirmation signal after the scheduling signal.
19. The network node of claim 17, wherein the circuitry is configured to cause the network node to perform a CCA before transmitting the scheduling signal.
20. The network node of claim 15, wherein the circuitry is configured to cause the network node to perform a CCA before transmitting the scheduling signal.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
January 23, 2020
December 6, 2022
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